Vaporizer



M. KATZMAN Jan. 1, 1952 VAPORIZER 2 SHEETS-SHEET 1 Filed Nov. 2, 1948 3 INVENTOR. Max/(017074 ATTORNEYS Jan. 1, 1952 I i KATZMAN 2,580,793

VAPORIZER Filed Nov. 2, 1948 2 SHEETS-SHEET 2 ATTORN Q BY M+7 Patented Jan. 1, 1952 UNITED STATES PATENT OFFICE VAPORJZER Max Katzman, Brooklyn, N. Y.

Application November 2, 1948, Serial No. 57,964

Claims.

The present invention relates to Vaporizers of the type employed to electrically vaporize liquids and to liberate the vapors within a room or other confined space. Although the vaporizer of the present invention has a wide range of utility, it is particularly adapted-to vaporize medicated liquids for inhalation in the treatment of respiratory ailments or to vaporize deodorant or disinfectant liquids.

In electrical Vaporizers of the general type referred to, there is provided a jar adapted to contain the liquid to be vaporized, a removable lid for said jar, an electrical heater depending from the underside of said lid having suitable electrodes to be submerged in the jar of liquid, and terminals for such heater secured to the upper side of the lid for connection to an electric plug.

In a prior construction as disclosed in Letters Patent of the United States #2,387,155, granted to me on October 16, 1945, the cover was composed of two pieces of glazed ceramic insulating material, and was formed with a nozzle extension through which the vapors were discharged. This extension was made round and extended through substantially more than 180, so that acute angles were formed at the junction of the nozzle extension with the cover proper. A slip-on shield or guide of substantially circular cross-section which was formed of resilient sheet metal and open along its lower side was slipped onto the nozzle extension with its lower edges extending into the angles to hold the shield securely in place.

The' present invention has for its object the provision of a one-piece lighter, more economical, thin-walled cover composed of plastic insulating material such as Bakeliteof a suitable construction for securing a shield in fixed position.

It has not been found feasible to mold the cover of plastic with acute external angles at opposite sides of the nozzle as in the prior ceramic construction. On the contrary, it has been found necessary to form the nozzle extension with flat substantially parallel sides so that while the shield or guide could be snapped around the extension to grip it, there would be nothing but friction to hold the shield or guide down in place.

In accordance with the present invention, this difiiculty is overcome by slotting the shield or guide to receive the shank or shanks of one or more headed retaining members, so that the shield or guide, which is held against longitudinal movement by gripping the nozzle extension, is also positively held down in place on the nozzle extension.

Other objects and advantages will hereinafter appear.

In the drawing forming part of this specification Fig. 1 is a fragmentary view in side elevation of a vaporizer with a shield or guide applied, said combination constituting a practical and advantageous illustrative embodiment of the invention;

Fig. 2 is a plan view of the structure illustrated in Fig. 1;

Fig. 3 is a view of the cover taken upon the section line 3-3 of Fig. 1 looking in the direction of the arrows;

Fig. 4 is a sectional view of the cover with the shield omitted, the section being taken upon the line 44 of Fig. 2 looking in the direction of the arrows;

Fig. 5 is a fragmentary view in side elevation of a modified form of cover and shield;

Fig. 6 is a fragmentary plan view of the structure illustrated in Fig. 5;

Fig. 7 is a fragmentary view in elevation of a further modified form of cover and shield; and

Fig. 8 is a fragmentary plan view of the struc ture illustrated in Fig. 'l.

The complete atomizer comprises a jar I which is formed with an externally threaded neck, and a cover 2 which is adapted to be threaded on the jar. The cover carries brackets 3 through which heating electrodes, not shown, are suspended from the cover. The cover also includes a pair of electrical terminal pins 4 which are clamped in place by nuts 5, the pins 4 and the nuts 5 constituting the means for securing the brackets 3 to the cover.

The cover is of a molded one-piece construction consisting of an insulating plastic material such as Bakelite. The cover includes an upstanding flange 6 which extends around the bases of the terminal pins 4 on three sides. The remainder of the cover presents a substantially flat exterior, save that a nozzle extension 1 is provided. The nozzle extension is formed with a dome-like top portion which slopes upwardly,

and with parallel vertical sidewalls. The top of the nozzle is semi-circular and merges smoothly at the terminals of the semi-circle into the vertical flange 6. The side walls meet the flat a portion of the cover substantially at right-angles,

, metal is adapted to be secured in place upon the nozzle extension 1. The shield comprises a sleeve 3 of the shield. The shield also includes an attaching portion l2 which constitutes a continuae tion of the sleeve portion, but which has parts cut away sov that the shield may be attached properly to the cover. Although the attaching portion fits substantially against the sloping top of the nozzle extension 2, it is cut away along the edges I3, so that these edges will be caused substantially to extend along the fiat portions of the cover in gripping contact with the side walls of the nozzle extension.

The nozzle extension is formed with an internal boss is having a bore, and a headed fastener I5, which desirably takes the form of a case hardened drive screw, is secured in the bore with its head spaced a short distance from the upper surface of the nozzle extension.

The attaching portion of the shield is formed with a slot ll large enough to pass the shank of the screw H3, but not large enough to pass the head of the screw. The shield may accordingly be applied to the cover by sliding the attaching portion down along the nozzle extension with the shank of the screw [6 received in the slot H.

The shield is pushed onto the nozzle extension a until it is arrested by engagement of the screw shank with the inner end of the slot ll, the parts being placed in the relative positions illustrated in Figs. 1., 2 and 3.

The attaching portion grips the nozzle extension to hold the shield against longitudinal move ment, while the coaction of the head of the screw It with the attaching portion l2 prevents the lifting or prying of the shield ofi of the nozzle extension. 7

The form of the invention illustrated in Fig. 5 is generally similar to that illustrated and described in and in connection with Figs. 1 to 4. Corresponding reference characters have accordingly been applied to corresponding parts with the subscript a added in each instance. -The description will be confined to the parts which differ specifically from those which have been described in connection with Figs. 1 to 4.

In place of the single headed fastener l6 and the single slot ll, two headed fasteners 2| are provided at opposite sides of the nozzle extension la, the heads of the fasteners being spaced from the side walls of the nozzle. The attaching portion 52a of the shield is formed with two slots 22 which extend in the direction of the length of the shield.

With this form of construction, the shield is expanded as before and slipped onto the nozzle extension. The headed fasteners 2| cooperate with the resilient attaching portion to hold the shield against accidental dislodgment with respect to the nozzle la.

In the form of construction illustrated in Figs. 7 and 8, the parts are generally like the parts illustrated and described in connection with Figs. 1 to 4. Corresponding reference numerals have been added to corresponding parts with the subscript 12 in each instance. No general description of the structure will be given, but the description will be confined to features in which the construction of Figs. '7 and 8 differ from that of Figs. 1 to 4-.

Instead of providing the nozzle extension with a single fastener l6, headed fasteners 23 are secured to flat portions of the cover alongside the nozzle extension lb.

The attaching portion 52b of the shield 9h provided with slotted cars 24. When the nozzle is applied to the cover, it is moved rearward to 4 lodge the shanks of the fasteners 23 in the slots of the ears 24, with the heads of the fasteners disposed above the ears to hold the shield down in place.

I have described what I believe. to be the best embodiments of my invention. I do not wish, however, to be confined to the embodiments shown, but what I desire to cover by Letters Pat ent is set forth in the appended claims.

I claim:

1. In an atomizer, in combination, a molded cover of plastic insulating material having a nozzle extension formed with substantially straight parallel sides, and a detachable shield of resilient material open at the bottom and having an attaching portion which, when expanded, embraces the nozzle extension and grips the flat sides thereof, said cover including headed fastener means, and said attaching portion of the shield being slotted to interfit and cooperate with said headed fastener means to assist in preventing accidental disarrangement or separation of the shield.

2. In an atomizer, in combination, a molded cover of plastic insulating material having a nozzle extension formed. with substantially straight parallel sides, and a detachable shield of resilient material open at the bottom and having an attaching portion which, when expanded,- embraces the nozzle extension and grips the hatsides thereof, said cover including a headed fas tener mounted on the nozzle extension, and said attaching portion of the shield being formed with a longitudinally extending slot for receiving and embracing the fastener shank beneath the fastener head to assist in preventing accidental displacement or separation of the shield.

3. In an atomizer, in combination, a molded cover of plastic insulating material having a nozzle extension formed with substantially straight parallel sides, and a detachable shieldof resilient material open at the bottom and hav ing an attaching portion which, when expanded,

; embraces the nozzle extension and grips the flat F sides thereof, said cover including a pair of fasteners mounted to extend from the opposite flat sides of the nozzle extension, and said attaching portion of the shield being formed with longitudinally extending slots for receiving and embracing portions of the fasteners to assist in preventing accidental displacement or separation of the shield.

.4. In an atomizer, in combination, a molded cover of plastic .insulating material having a nozzle extension formed with substantially straight parallel sides, and a detachable shield of resilient material open at the bottom and having an attaching portion which, when expanded, embraces the nozzle extension and grips the flat sides thereof, said cover including a pair of headed fasteners mounted to extend upward from the cover adjacent opposite sides .of the nozzle extension, and the attaching portion of the shield including cars which are formed with longitudiw nally extending slots, the slots being adapted to receive and embrace the fastener shanks beneath. the fastener heads to assist in preventing ac cidental displacement or separation of the shield.

5. An atomizer shield adapted for attachment?- to a straight-sided parallel-sided nozzle exten-- sion of anatomizer cover which includes headed.

fastener means; said shield being formed of resilient sheet metal and comprising an open-sided sleeve portion and an attaching portion, the attaching portion being spreadable, and being 5 6 adapted to grip the straight sides of a, nozzle ex- UNITED STATES PATENTS tension 01' the kind referred to, and having a Number Name Date slotted formation for cooperating with the headed 456,538 Potter July 21, 1891 fastener means on the cover to assist in holding 562,577 Clasen June 23, 1396 the shield against accidental dislodgment or sep- 5 815 897 Bray Apr. 3 1906 ammn- 1 228:658 Gaines June 5 191'? MAX KATZMAN- 1,402,517 Kuno Jan. 3, 1922 1,809,763 Tarrant June 9, 1931 REFERENCES CITED 1,913,124 Launer et a1. June 6, 1933 The following references are of record in the 10 2,171,175 Grafe Aug. 29, 1939 file or this patent: 2,235,577 Evans Mar. 18, 1941 2,477,519 Kirby July 26, 1949 

